1111312247 has 2 divisors, whose sum is σ = 1111312248. Its totient is φ = 1111312246.

The previous prime is 1111312201. The next prime is 1111312283. The reversal of 1111312247 is 7422131111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1111312247 - 2²² = 1107117943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111312297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555656123 + 555656124.

It is an arithmetic number, because the mean of its divisors is an integer number (555656124).

Almost surely, 2^1111312247 is an apocalyptic number.

1111312247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111312247 is an equidigital number, since it uses as much as digits as its factorization.

1111312247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336, while the sum is 23.

The square root of 1111312247 is about 33336.3502351412. The cubic root of 1111312247 is about 1035.8066624777.

Adding to 1111312247 its reverse (7422131111), we get a palindrome (8533443358).

The spelling of 1111312247 in words is "one billion, one hundred eleven million, three hundred twelve thousand, two hundred forty-seven".